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A closed-end cylindrical pressure vessel constructed of carbon steel has a wall thickness of 2 mm, a diameter of 150 mm, and a length of 760 mm. What are the hoop and axial stresses , when the cylinder carries an internal pressure of 10 MPa? How much does the radius of the cylinder expand due to the internal pressure?
find the entropy production in a throttling process per unit mass for ammonia. take the inlet state as specified as
A centrifugal pump, weighing 600N and operating at 1000 rpm, is mounted on six springs of stiffness 6000 N/m each. Find the maximum permissible unbalance in order to limit the steady-state deflection to 5mmm peak-to-peak.
a car air conditioning system operates with r-134a in the peak summer outside at 100degf and inside desired at 77degf.
a body initially at rest is accelerated to a velocity of 200ms along the surface inclined at 30 degrees relative to
(a) Draw and label a schematic of the system. (b) Determine the mass flow rate (kg/s) of water vapor neededand (c) the rate of exergy destruction (kW)
What is the communication time if the local conditions limit spacecraft visibility to elevation angles larger than = 18 degrees?
the plank cde has a mass m15kg and is rest on a small pivot at d. a block a of mass 55 kg is resting on point c. a
a 98 kg log is being moved by placing it on two cylinders. when the log has a linear velocity of 2.76 ms a force
the radial component of velocity of water leaving the centrifugal pump sketched in figure is 30 fts. the magnitude of
a 2.5 lbf block b is moving with a velocity vo of magnitude vo 6fts as it hits the 1.5 lbf sphere a which is at rest
No heat interactions with the environment are allowed. You do not need to describe the details of the process that produces the maximum work, but you do need to describe the final state of the blocks fully.
a 0.1-m3 rigid tank contains steam initially at 500 kpa and 200 c. if the temperature in the tank is lowered to 50 c
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